摘要:
A communication network includes a plurality of antennas and includes among the antennas at least one reconfigurable antenna adapted to serve communication traffic in a respective coverage area, the reconfigurable antenna having a radiation diagram exhibiting a plurality of selectively adjustable gain values for a set of directions, each direction in the set defining a propagation path between the antenna and a portion of the coverage area, determining, for each direction in the set, at least one value of communication traffic and at least one attenuation value over the propagation path, and selectively and independently alloting to each direction in the set a respective gain value as a function of at least one of the value of communication traffic and the attenuation value determined for that direction. The arrangement is adapted for use in communication networks such as second and third generation mobile communication networks employing electrically controllable antennas.
摘要:
The present invention relates to a method for optimizing the positioning of high sensitivity receiver front-ends 5 in a mobile telephony network 1 of the CDMA type comprising a plurality of cells 2. The method comprises the following steps: defining a first and a second cell indicator Vcell, V2; defining a first and a second threshold value L and L2; comparing said first cell indicator Vcell with a first threshold value L and said second cell indicator V2 with a second threshold value L2; associating with a first category a plurality of first cells 2a having said first cell indicator Vcell greater than said first threshold value L or said second cell indicator V2 greater than said second threshold value L2; positioning a plurality of high sensitivity receiver front-ends 5 substantially in all said plurality of first cells 2a. The method further comprises the steps of: associating with a second category a plurality of second cells 2b having said first cell indicator Vcell smaller than said first threshold value L and said second cell indicator V2 smaller than said second threshold value L2; positioning a plurality of low sensitivity receiver front-ends substantially in all said plurality of second cells 2b.
摘要:
The present invention relates to a system and method for planning networks for mobile terminals that use a radio interface based on the Code Division Multiple Access or CDMA technique. More particularly, the system and method provide a step 500 whereby the Service Areas in these networks can be calculated using, as a reference, Domains calculated by means of a step 300 on the basis of real propagation models and taking a predetermined or estimated traffic into account on a pixel by pixel basis. In addition, the system and method make it possible to calculate the Macrodiversity Areas by means of a step 700, and thus to take the areas in which mobile terminals are capable of exchanging information with more than one radio base station into account at the planning step.
摘要:
The present invention relates to a system 10 and corresponding method for locating mobile terminals 12 following a location request whereto is associated information whose content depends on the position and characteristics of the mobile terminal 12 to be located. The system 10 comprises a cellular phone location centre (MLC centre) 15 able to locate the mobile terminals 12, in selective fashion, as the type and reliability of the received information vary. The system 10 and corresponding method allow, by means of the MLC centre 15, to select, among a plurality of location engines, a determined engine suited to manage the received information and selectively to identify both the position of the mobile terminal 12 and accuracy indicators relating to the type of locating operation performed.
摘要:
The present invention relates to a system 10 and corresponding method for locating mobile terminals 12 following a location request whereto is associated information whose content depends on the position and characteristics of the mobile terminal 12 to be located. The system 10 comprises a cellular phone location centre (MLC centre) 15 able to locate the mobile terminals 12, in selective fashion, as the type and reliability of the received information vary. The system 10 and corresponding method allow, by means of the MLC centre 15, to select, among a plurality of location engines, a determined engine suited to manage the received information and selectively to identify both the position of the mobile terminal 12 and accuracy indicators relating to the type of locating operation performed.
摘要:
The radiation diagram of an antenna for serving a cell in a cellular communication network is selected from a plurality of available radiation diagrams by: classifying the plurality of available radiation diagrams in terms of a related radiation gain value; identifying for each one of the sectors a plurality of variations of the radiation gain value associated with the available radiation diagrams; estimating for each sector an initial value of at least one indicator of network operative functionality; estimating for each sector at least a desiderate value of variation of the related radiation gain value; and selecting at least one configuration that approximates the variation of the radiation gain value involving the desiderate value.
摘要:
A method for planning a telecommunication network for radio apparatuses includes a plurality of cells distributed over a geographical area, each of which has a set of elementary areas of territory called pixels adapted to receive a radio signal irradiated by a fixed radio base station in which for each cell is determined a service area of the location of the pixels of the cell in which the network is able to provide predetermined services to the mobile apparatuses located therein. The pixels belonging to the service area pertaining to a predetermined cell are identified according to a criterion for selection in succession based on the values of a sorting function, which is a function of the quantity of traffic pertaining to the pixels being examined, and the resulting service area is computed as a set of the pixels of the cell progressively selected in a manner that the sum of the contributions of the individual pixel does not exceed a predetermined limit value of the load factor of the cell. A computing system and a computing program or group of programs executable by the system and adapted to implement the method.
摘要:
The radiation diagram of an antenna for serving a cell in a cellular communication network is selected from a plurality of available radiation diagrams by: classifying the plurality of available radiation diagrams in terms of a related radiation gain value; identifying for each one of the sectors a plurality of variations of the radiation gain value associated with the available radiation diagrams; estimating for each sector an initial value of at least one indicator of network operative functionality; estimating for each sector at least a desiderate value of variation of the related radiation gain value; and selecting at least one configuration that approximates the variation of the radiation gain value involving the desiderate value.
摘要:
A method for planning a radiocommunications network includes computing cell coverage in turn including dividing a region around a radio base station into a number of large environment pixels, dividing each large environment pixel into a number of small environment pixels, and, for each target small environment pixel, computing a second quantity indicative of the coverage within the target small environment pixel, wherein each second quantity is computed for the respective target small environment pixel as a function of a mixed environment profile describing the environment between the radio base station and the target small environment pixel along a propagation path of a radioelectric signal radiating out from the radio base station and passing through the target small environment pixel, wherein the mixed environment profile describes the environment within small environment pixels close to the radio base station and the target small environment pixel, and within large environment pixels along the remaining stretch of the radioelectric signal propagation path.
摘要:
A method for planning a radiocommunications network includes computing cell coverage in turn including dividing a region around a radio base station into a number of large environment pixels, for each large environment pixel, computing a first quantity indicative of the coverage within the large environment pixel, dividing each large environment pixel into a number of small environment pixels, and, for each small environment pixel, computing a second quantity indicative of the coverage within the small environment pixel, wherein each second quantity is computed for the respective small environment pixel as a function of the first quantity computed for the large environment pixel containing the small environment pixel, and of data describing the environment within the small environment pixel and within small environment pixels within the large environment pixel and arranged upstream the small environment pixel along a radioelectric signal propagation path passing through the small environment pixel.